bcm27xx: add support for linux v5.15

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.15/950-0561-ARM-dts-Provide-WLAN-firmware-names-for-Zero-2-W.patch b/target/linux/bcm27xx/patches-5.15/950-0561-ARM-dts-Provide-WLAN-firmware-names-for-Zero-2-W.patch
new file mode 100644
index 0000000000..23c8f5964a
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0561-ARM-dts-Provide-WLAN-firmware-names-for-Zero-2-W.patch
@@ -0,0 +1,40 @@
+From ef292559833a279be2aac7ae8222348b1c122826 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.com>
+Date: Thu, 28 Oct 2021 15:09:25 +0100
+Subject: [PATCH] ARM: dts: Provide WLAN firmware names for Zero 2 W
+
+BCM43430/2 may be BCM43430B0 or BCM43436P, and BCM43430/1 can be either
+BCM43430A1 or BCM43436S, the former being upstream names and the
+latter downstream names for differently-sourced sister parts.
+
+Make the choice of firmwares board-specific (without making the actual
+firmwares board-specific) by placing the alternative firmware names for
+each part in the DT node.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts | 13 +++++++++++++
+ 1 file changed, 13 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
++++ b/arch/arm/boot/dts/bcm2710-rpi-zero-2-w.dts
+@@ -89,6 +89,19 @@
+ 	brcmf: wifi@1 {
+ 		reg = <1>;
+ 		compatible = "brcm,bcm4329-fmac";
++
++		firmwares {
++			fw_43436p {
++				chipid = <43430>;
++				revmask = <4>;
++				fw_base = "brcm/brcmfmac43436-sdio";
++			};
++			fw_43436s {
++				chipid = <43430>;
++				revmask = <2>;
++				fw_base = "brcm/brcmfmac43436s-sdio";
++			};
++		};
+ 	};
+ };
+